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Finding the Fourth Proportional to 637,939,932.80, 957,357,796.80 and 274,694,979.20

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Solution

The fourth proportional to 637,939,932.80, 957,357,796.80 and 274,694,979.20 is: 412,235,332.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,939,932.80 : 957,357,796.80 = 274,694,979.20 : x
  2. Step 2: Convert to fraction form
    637,939,932.80/957,357,796.80 = 274,694,979.20/x
  3. Step 3: Cross multiply
    637,939,932.80x = 957,357,796.80 × 274,694,979.20
  4. Step 4: Simplify right side
    637,939,932.80x = 262,981,380,078,933,792
  5. Step 5: Solve for x
    x = 262,981,380,078,933,792/637,939,932.80
  6. Step 6: Final answer
    x = 412,235,332.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.